AD5204BRZ10

Overview

The AD5204BRZ10 is a four-channel digital potentiometer IC from Analog Devices, featuring 256 programmable tap positions per channel. It provides a nominal terminal resistance of 10 kΩ with a temperature coefficient of 700 ppm/°C and a tolerance of ±30%. The device operates on a single supply voltage ranging from +2.7 V to +5.5 V or a dual supply of ±2.7 V. Control is managed via a 3-wire SPI-compatible serial interface using SDI, CLK, and CS pins. Each channel includes an independent volatile latch for resistance storage.

Feature Summary

• Four independently programmable channels with 256-position resolution
• Nominal resistance of 10 kΩ with linear taper
• 3-wire SPI-compatible serial interface with daisy-chain capability via SDO pin
• Power-on midscale preset and hardware reset (PR) pin functionality

Applications

• Mechanical potentiometer replacement in embedded systems
• Instrumentation gain and offset adjustment circuits
• Programmable voltage-to-current conversion stages
• Line impedance matching applications

Procurement Notes

Verify the package type upon ordering; the BRZ suffix indicates a 24-lead SOIC package. Confirm that the specific revision matches current manufacturing standards as datasheets undergo periodic updates. Ensure compatibility with the target system's logic levels, noting that input thresholds vary between 3 V and 5 V operation modes.

Selection Notes

Select this component when four isolated variable resistors are required within a single footprint. The 10 kΩ value suits moderate impedance applications; higher resistance options exist in the same family. Consider the volatile memory nature, which requires state restoration after power loss. Verify thermal dissipation requirements if operating near maximum current limits.

Part Context

This part belongs to the AD5204/AD5206 family of 4-/6-channel digital potentiometers. It shares architectural similarities with the AD8400 series but offers multi-channel integration. The BRZ designation specifically identifies the 24-lead SOIC surface-mount package variant, distinguishing it from TSSOP or LFCSP packages available in the broader product line.

Replacement Considerations

Direct functional substitutes include other 4-channel digital potentiometers with SPI interfaces and similar resistance values. Cross-referencing pinouts is essential when replacing with devices from different manufacturers due to potential variations in control logic or pin assignments.